Best DOCSIS 3.1 Modems of 2026: Top Picks for Every Speed Tier
DOCSIS 3.1 is still the sweet spot for cable internet in 2026. This guide compares the 9 best DOCSIS 3.1 modems by speed tier, upload support, and ...
High-speed Internet and Wireless N at your fingertips. The Motorola SURFboard SBG6580 Wi-Fi Cable Modem is 3 products in one device: DOCSIS 3.0 Cable Modem, Dual-Band 802.11n Wi-Fi Access Point, and 4-port Gigabit Ethernet Router. Capable of download speeds up to 343 Mbps and Wi-Fi speeds up to 300 Mbps per band, the SBG6580 is an affordable, complete solution for your home network. And with built-in security, you never have to worry.
The Motorola SurfBoard SBG6580 works with Comcast Xfinity, Time Warner Cable & Spectrum services in most areas. We recommend this model for homes under 2,500 SqFt for optimal coverage and connectivity. ModemGuides Technicians always recommend calling your provider before ordering to confirm that this model would be a good fit for your home network.
The Motorola SurfBoard cable modem features 8x4 channel bonding which allows for download speeds up to 343 Mbps. The speeds supported by the SBG6580 are more than adequate to stream HD or 4K video, play games online, and keep your whole home connected to a high-speed wired or wireless network.
This Arris modem is primarily used and is compatible with Mediacom, Comcast, Spectrum, Charter & Time Warner service in most areas. To verify that this model will work in your area, always contact your service provider's customer service prior to placing your order with us to confirm that this model will work with your service plan. Some service plan speeds may not be supported.
Activating your Motorola SBG6580 is the first step you need to take after unboxing your new modem. It's a fairly simple process, and we recommend setting aside about an hour of your time to ensure you're able to complete the whole activation. For resetting your modem and finding your IP address, the provided steps make it easy to manage your device and troubleshoot any issues you might encounter.
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